This project belongs to Content Delivery Network (CDN) and cloud data center scheduling technology in the field of computer and network technology. With the explosive growth of large concurrent services represented by Internet video and "Internet +" enterprise applications, the development of content distribution technology with independent intellectual property rights is of great strategic significance to my country's Internet and digital content industries. Wangsu Technology has cooperated with Fudan University to carry out technological research and has successively undertaken projects such as the National Natural Science Fund, the National Development and Reform Commission, and the revitalization and technological transformation of the national electronic information industry. Based on the global hybrid cloud architecture of the Internet, the two parties have carried out research and development and application of key technologies for CDN and P2P content optimization distribution platforms, and have developed and completed a complete set of Content Delivery Network platforms with large concurrency, high cost performance, and operable management, and innovatively proposed CDN-P2P hybrid content distribution model builds the country's first network-layer enterprise application optimization platform, takes the lead in realizing multi-level optimization management technology for inter-network traffic, and creates a new model for the Content Delivery Network service market. Overall, the technology has reached the domestic leading and international advanced level.
Main technological innovation contents and characteristics:
1. ETCP's proprietary efficient transmission and application acceleration technology: We independently develop an efficient private transmission protocol, which comprehensively integrates TCP in various aspects such as sliding windows, slow start, terminal adaptation, packet loss retransmission, improving verification efficiency, and improving single packet transmission. After optimization, the protocol has higher stability, stronger adaptability, and better acceleration effect.
2. Multi-source Load Balancer and Flow Optimization Management Technology: Initiate the multi-source Load Balancer method and system based on proportion polling, judge the bearing capacity of each source, distribute the requests of each source according to a certain proportion, realize Load Balancer for multiple sources, and realize multi-level optimization management of inter-network flow.
3. Active defense technology for cached content: An intelligent anti-grabbing method for website content based on the Content Delivery Network is proposed. It uses the independently developed application-layer network communication filtering method and combines high-intensity verification algorithm to realize active defense of the network transmission process and distributed content, effectively improving the security and reliability of content distribution.
4. CDN-P2P hybrid content distribution technology based on cloud architecture: Innovatively propose a new integrated scheduling model and a hybrid distribution incentive model of CDN global scheduling and P2P distribution extension under the CDN-P2P tight integration model, forming a hybrid distribution architecture with CDN as the reliable core and P2P as the service edge to realize a manageable and guaranteed CDN-P2P hybrid distribution service model. It is the first P2P-ISP friendly distribution model guided by CDN in the CDN-P2P loose integration model to realize a P2P-ISP friendly distribution mechanism.
Patents and awards awarded:
26 invention patents have been applied for for various key technologies tackled by this project, including 9 authorized patents and 12 registered software copyrights. He has published 19 papers in important international conferences and authoritative core journals. It passed 2 high-tech achievement transformation projects in Shanghai City, both of which were recognized as Class A. A number of achievement indicators have been included in domestic and international standards, including 1 national standard and 1 IETF draft international standard.
Application promotion:
1. The network-hosted network application optimization platform and network-hosted content and traffic management platform developed based on the key technologies of this project have entered the industrialization promotion stage. They have been successfully applied in nearly 200 companies in the fields of science and technology, finance, and manufacturing such as Shenxun and Zhejiang Mobile. Users cover 18 provinces and cities, 5 autonomous regions, and 2 municipalities directly under the Central Government of China, and their product performance is highly recognized by customers. 2012-2014 The cumulative annual added output value is 1.254 billion yuan, new profits are 439 million yuan, and new taxes are 84.14 million yuan.
2. Fudan's CDN-P2P mixed content distribution model and algorithm have been promoted and applied to the Internet hosting CDN platform, and the 2010 National Development and Reform Commission's special project for trial commercialization and equipment industrialization of next generation Internet services-the China University Academic Video Resource Sharing Demonstration Project. It has been applied to the online China Academic Conference hosted by the Ministry of Education at the end of 2010.